of cornwall



^ elevated, if de'sired, by the usual mechanical means.

sf w. Woon. 'or o onNMW'lALL," N n-w YORK; I

Letters Patent No. 79,044, dated June 16, 1868.

TO ALL WHOM IT MAY OONCERN Be it known that I, S. W. Woon, of Cornwall, in the county of Orange, and State of New York, have invented an Improved Apparatus-for Conveying'ancl Elcvating Grain; and I do hereby declare that the following is a` full and exact description th'ereoref'erence being had to the accompanying drawings, making part of this y specification--- j v Figure 1 being a' top view of a grain-eonveying and elevatingbpparatus provided with my improvements. if

Figure 2, 4a side elevation thereof. f I

Figure 3, a longitudinal vertical section of the same.

Figures 4, 5, and 6, views, in section, representing'diilerent modifications cfa part of the apparatus.

Figures 7 and 8, views representing di'erent constructions of the receiving-nozzle of the exhanst-pipe appli., i cable in different circumstances.

Figures 9 and 10, views of Vmodified constructions of-the discharging-norzle.v

Like letters designate corresponding parts in all of the figures. l

In this apparatus the grain isdrawn into andconveyed in a pipe or passage by atmospheric pressure, produced by the continued partial exhaustion of the air therefrom, and then discharged, or further conveyed or As the different parts of the apparatus are represented in the accompanyingdrawings,the atmospheric .i conveying-pipe or passage Anonducts the grninintoa. close exhaust-chamber, B, `from.w hicl1.the airisdrawn 1 by a blower, C,o1 air-pump, or equivalent means of exhausting air from the chamber and conveying-pipe.

From thochamber B the grain is discharged either directly into the receptacleor into a mechanical elevator., F, which delivers-it to a dis berging-spout, pipe, or passage,f, from which it is finally directed by a nozzle, g,

to any desired point. The conveying-pipe A has two constructions of nozzle for taking' uplgrain: first, that represented in fig. 7, f to take up grain from the surface; second, that shown in tig. 8, for receiving the 'grain when inserted or ,immersed therein.

The surfac e-nozzle,.fig. 7, is curved or bent, asy indicated, so as to terminate in a nearly horizontal direction, in order t'o allow a free in gross of air, together with the grain, without obstructing 4thel passage, and to draw in the grain from different directions as well.- The end ilares, or isenlarged, to more certainly secure the introduction o f'sutiicient air. With this form of nozzle the pipe can be moved over the surface of the grain, slffhtly dippingvtherein, and rapidly receive and convey it. t t

The form shown in `iig. 8 provides for controlling the admission of grain, so asl not to clog therewith, even when inserted into the mass thereof, by contracting the mouth o, in order to prevent too great aningress of grainI to be freely conveyed bythe blast of air, mostly admitted through the side opening l,or pipe, as indicated 4by dotted lines in fig. 8. i" @my i The exhaust-chamber B receives the blast of air in its passage to the pump dr blower, mingled with grain. 1' i- The'blower or p ump C is located above the chamber B,`and the direction of the discharge from the conveyinglt pipe A is such, in relation to the position of the-entrance into the pipe or passage e communicating between thel chamber and the blower or pump, that the grain will be lodgedv in the chamber, while the air thus separated from 'the grain Viiows up to the blower. 'Various relative; arrangements of parts will fnlii'll this condition, such .is indicated in figs. 3, 4, 5, and 6. vBut the principle is the same in all, to wit, an enlarged chamber, to receive the grain and to diminish the velocity of the air through it by expansion, and such direction given to 4 the grain as it enters the chamber as not to strike the entrance ofthe exhaust-passage leading to the blower or p map.4 This exhaust-chamber may be simply an enlargement of the pipe o r passage through which the-conveying;I blast is conducted, and so arranged as to deliver. the grain before reaching the pump or blowcr.

Figs. 4 and 5 show merely modified forms of such an enlargement of the passage. I I i vSince the exhaust-chamber B receives the conveying-blast `in its passage to the blower or pump', it must,

during the conveyance of grain, he closed, except at thc inlet and,outlct of the conveying-pipe or passage,

while it must alsohave discharge-openings for the accumulated grain thereim '.lo fulfil these conditions, all that is necessary'is to secure a continual and suliicient accumulation of'grain at -the discharge-opening to keep it in a compact mass, and the grain itselfavill then keep the discharge-opening nearly or practically closed to to receive the conveying-blast and grain, and

' V9, is e mployc\i, so'formed as to direct the grain as required.-

to one side or another, it is swivelled to the discharge-pipe or spout, as'indicated in the same figure, the dotted lines indicating one position,

'narily closed by avalve,

.nately, as indicated.

the air, without interfering with it? own discharge, or the constant dow of grain .through the conveying-pipe A.

.The exhaustlchamber B has such a form as to collect and discharge the grain at an outlet, d, which is ordi- .the grain to run out when it has accumulatedto a certain quantity or weight upon the valve, or the valve may i be closed by the inward pressureof the air.

A still'more perfect arrangement for the discharge is represented charged from the exhaust-.chamber`]3, through the discharge-opening "d, into another chamber, II, 'and thence through an opening, z', closed by another valve, I..I v l' 1 I -These valves operate alternately,l and consequently no passage i'or'admittingl air is ever opened into the exhaust-chamber through the discharge-openings. In order to insure -the exact alternation oi' the-two vxilves, they may be connected by a-rod, as indicated by red lin'cs. l

By the arrahgement.represented in 6, two exhaust-chambers or compartments, B B, are 'employed discharge the grain alternately. T heivalv'es D D, closing the discharge-openings d d, may be connected together and move on a common centre, so that they 'must act alter- 'In this figure also arc-shown springs, 1J p, instead of counter-weights, for regulating the accumulation of grain in the exhaust-chambers. The discharge of grain from the exhaust-chaniber B may be direct-to the place required. But it may be often desirablel to further elevatel the grain by the ordinaryimechanical elevators. Such an elevator, of any construction, may be represent-ed as at F, iig. 3, in the drawings1 The grain is received from the chamber B-into a hopper or conveying-passage, c, and trhn{erred to the `elevator F, and-thencedelivered to the discharging-spout, or pipe, or passage f, which-conveys thegrain to the place' required. The blast from the blower C or pump may here be introduced, for assisting thedrstribution of the gr'ain. yFor this purpose a pipe, Gr, connects the blower with the discharge-pipo f. however, may be used Without the forcing-blast. v 4

- In order, also, to direct the discharge horizontally, or sidewise, a bent or curved distribiting-nczzle, g, fig. And in order that the nozzle may direct the grain and ,the full lines another. By turning the nozzle g, the direction of is "aried at pleasure, so as to.fill all parts of the room into which the grain is received, or to trim the'vessel into which it is loading.

A modification of the sivivellcd-nozzle may be madeby multiplying the number of curved nozzles in dii`- ferent directions. But this is not so simple or eective as the single-swivelled nozzle.

Another modification is represented in iig. 10, consisting in a concave cone', h, situated centrally ander the l discharge-pipef,

and discharging the grain equally in all directions.

What I .claim as my invention,and desire' to secure by Letters Patent in a pneumatic grain-,conveyor and elevator, is A The 'combination and arrangement of kthc atmospheric conveying-pipe or passage A, exhaust-chamber B, and pump or blower C, substantially as and for the purpose herein speciied.

In combination with the foregoing, I also claim the self-acting discharge-valve D, operating substantially as and for the purpose herein set forth. 1 4

I also claim the ladditional chamber H, and discharg-yalve I, alternating withv the'valve D, substantially as and for the purpose specified.

' I also claim thecontracted aperture o of the receiving-nozzle, forthe purpose specified.

I also claim the combination of a pneumatic pipe-or passage, for conveying grain, with a mechanical arainelevator, as herein specified.

a Ialso' claim the Vcurved or bent spout, so as to distribute .the grain by its own gravity, substantially i discharge-nozzle g, arranged' in combination with the' dischargepipe or as herein-specified.

' .SJ W. WOOD,

Witnesses: y

J. `S. BROWN,

A. VAN VRANKEN.

D. The valve iskcpt closed by a counter-Weight, m, so adjusted as to-.yield and' allow v in iig. 5. Here the. grain is hrst dis;

rlho discharge-pipe,

the discharge 

